finddups.java

java程序设计

import java.util.*;

public class FindDups {
    public static void main(String args[]) {
        Set<String> s = new HashSet<String>();
        for (String a : args)
            if (!s.add(a))
                System.out.println("Duplicate detected: "+a);

        System.out.println(s.size()+" distinct words detected: "+s);
    }
}